7 BASIC COMMUNICATIONS

CW TRANSMISSION

AUTO ZERO-BEAT

CW operators know that this mode is very reliable when communicating under worst conditions. It may be true that newer digital modes rival CW as being equally as useful in poor conditions. These modes, however, do not have the long history of service nor the simplicity that CW provides.

This transceiver has a built-in electronic keyer that supports a variety of functions. For details on using these functions, refer to “ELECTRONIC KEYER” {page 42}.

If necessary, refer to “OPERATING BASICS”, beginning on page 18, for details on how to receive.

1Select the operating frequency.

2Press [CW/ FSK/ REV] to select CW mode.

Use Auto Zero-beat before transmitting to tune in a CW station. Auto Zero-beat automatically and exactly matches your transmit frequency with the station you are receiving. Neglecting to do this will reduce your chances of being heard by the other station.

1Press [FUNC], [RIT/ CW TUNE] to start Auto Zero-beat.

• “CW TUNE” appears.

•“CW” appears.

•To precisely tune in another station, use Auto Zero-beat. Refer to “AUTO ZERO-BEAT” {below}.

3Press [SEND].

•The MAIN band LED lights red.

•Refer to “CW BREAK-IN” {page 42} for information on automatic TX/ RX switching.

4Begin sending.

•As you transmit, you should hear a sidetone that lets you monitor your own transmission. Refer to “TX SIDETONE/ RX PITCH FREQUENCY” {below}.

5Press [SEND] to return to receive mode.

•The MAIN band LED lights green or turns off, depending on the MAIN SQL setting.

Note: You may adjust the carrier level when necessary. Press [FUNC], [MIC/ CAR] to enter the adjustment mode. With the key down, turn the MULTI/ CH control so that the ALC meter reads within the ALC zone but does not exceed the upper ALC zone limit. Press [FUNC], [MIC/ CAR] again to complete the adjustment.

•Your transmit frequency automatically changes so that the pitch of the received signal exactly matches the TX sidetone/ RX pitch frequency that you have selected. Refer to “TX SIDETONE/ RX PITCH FREQUENCY” {below}.

•When matching is completed, “CW TUNE” disappears.

•If matching is unsuccessful, the previous frequency is restored.

2To quit Auto Zero-beat, press [FUNC], [RIT/ CW TUNE] or [CLR].

Note:

◆You cannot start Auto Zero-beat if you have selected 1.0 kHz or wider for the DSP filter bandwidth.

◆When using Auto Zero-beat, the matching error is within ±50 Hz in most cases.

◆Auto Zero-beat may fail if the keying speed of the target station is too slow or when some interference is present.

◆When RIT function is ON, only RIT frequencies change to make the Auto Zero-beat adjustment.

TX SIDETONE/ RX PITCH FREQUENCY

As you send CW, you will hear tones from the transceiver speaker. These are called transmit (TX) sidetones. Listening to these tones, you can monitor what you are transmitting. You may also use the tones to ensure that your key contacts are closing, the keyer is functioning, or to practice sending without actually putting a signal on the air.

Receive pitch refers to the frequency of CW that you hear after tuning in a CW station.

On this transceiver, the frequency of the sidetone and receive pitch are equal and selectable. Access Menu No. 31 to select the frequency that is most comfortable for you. The selectable range is from 400 Hz to 1000 Hz in steps of 50 Hz.

To change the volume of the TX sidetone, access Menu No. 13. The selections range from 1 to 9 and OFF.

Note: The position of the MAIN AF and SUB AF controls do not affect the volume of the TX sidetone.

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